Literaturrecherche

Literatur Aps R, Oeberst R, Falk U (1981) Morphological variability in the growth zones of otholiths of the Baltic sprat. Copenhagen: ICES

Literatur Frieß C-C, Oeberst R (1979) Investigation of fecundity of the Rügen spring spawning herring in 1976-1978. Copenhagen: ICES, 10 p